Turkish officials say a man fired shots at security guards after being prevented from entering the offices of the head of Turkey's Higher Education Board.
They say the unidentified assailant tried to enter by force the office of Erdogan Tezic. The man fled the scene, and there were no reports of injuries.
Tezic, a strict secularist, has been highly critical of Turkey's ruling AK Party. The Islamist-rooted party announced Foreign Minister Adbullah Gul as their presidential candidate Tuesday.
Some information for this report was provided by AFP and Reuters.